Puppet users - Nov 2009 - how can I use puppet to manage ec2 instances owned by the autoscaler?

I''ve done a setup of some puppet-managed virtual hosts under VMWare
before.  Now I''d like to manage a larger set of hosts in ec2.  But I
don''t see how to manage them given that hosts could come and go.  In a
static environment, I can assign hostnames to the hosts, and those are
the nodenames that appear in my manifest.  But in ec2, the number of
hosts isn''t static -- the point is to scale the number of hosts as I
need them, even allowing the dynamic autoscaler to do it.  In this
situation, the hosts don''t have hostnames that appear in my manifest.
When they wake up and ask the puppetmaster for the manifest, they
don''t appear in it.   How can I manage this?

Assuming there''s a way to do this, how do I handle the certificate
sign-off with puppetca as new hosts are commissioned by the
autoscaler?

Thanks!
Chris

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Chris Westin wrote:
> I''ve done a setup of some puppet-managed virtual hosts under
VMWare
> before.  Now I''d like to manage a larger set of hosts in ec2.  But
I
> don''t see how to manage them given that hosts could come and go. 
In a
> static environment, I can assign hostnames to the hosts, and those are
> the nodenames that appear in my manifest.  But in ec2, the number of
> hosts isn''t static -- the point is to scale the number of hosts as
I
> need them, even allowing the dynamic autoscaler to do it.  In this
> situation, the hosts don''t have hostnames that appear in my
manifest.
> When they wake up and ask the puppetmaster for the manifest, they
> don''t appear in it.   How can I manage this?
In 0.25.0+ you can use regular expressions to name nodes or you
could use an external node classifier.
> 
> Assuming there''s a way to do this, how do I handle the certificate
> sign-off with puppetca as new hosts are commissioned by the
> autoscaler?
> 
Get the autoscaler to trigger puppetca?

I''d also do a quick Google for Puppet and EC2

Regards

James Turnbull

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